Veneer-press.



No. 669,2I6. Patented Mar. 5', |90I.

F. GRNIG..

VENEER PRESS.

(Application led Nov. 20, 1900.) (No lodel.)

IID U2U INVENTOFL cams PETERS cd. Fuero-Lrmafwxsnmsmw, n, c,

UNITED STATES PATENT OFFICE.

FRIEDRICH GRNIG, OF OFFENBACH-ON-THE-MAIN, GERMANY.`

vENEER-PRESS'.

SPECIFICATION forming part of Letters Patent No. 669,216, dated March 5,1901. Application filed November 20, 1900. Serial No. 37,167.. (Nomodel.)

To a/ZZ whom, t may concern,.-

Be it known that I, FRIEDRICH GRNIG, manufacturer, a subject of theEmperor of Germ any,residing at Offenbach-on-the-Main, in the Empire ofGermany, have invented certain new and useful Improvements inVeneer-Presses, (for which applications for patents have been made inGermany, dat-ed February 15,1900; in France, dated March 5,1900, and inEngland, dated February 24, 1900,) of -which the following is aspecification.

This invention has forts object an improvementin the presses u sed forobtainingasmooth attachment and drying on of veneers, and, in'

fact, relates more particularly to presses of the kind which areprovided with a series of suspended pressing-stamps arranged inproximity to one another. Vith this improved machine it is possible tonow use veneers almost of the thinness of paper. Such veneers, however,become very warped and uneven during the drying and mounting. For makinga good veneer it is, however, necessary that in laying the veneer allthese numerous ridges and irregularities must be slowly pressed out inorder that they may not break, but at the same time the pressing must bedone with certainty from the center toward the outer edges in order thatno blisters or bubbles may result. This is attained in this improvedprocess by an arrangement of springmounted intermediate parts in theseparate press-plates, as shown in the accompanying drawings, in Which--Figure l is a front View, Fig. 2 a cross-section, and Fig. 3 a detailview, of a press constructed according to my invention.

Side bars or frames c are mounted on footbeams b, which are securelyraised on feet a, which side bars carry a cross-piece d. From thislatter the several pressing-plates f are suspended by means of screwedspindles e, said plates being each separately movable and guided byadjustable guide-bars g. On the foot-beams b a bed or foundation plate his mounted and supported on plate-springs t' and held by lateral pins7c, so that it only lies firmly after it has overcome the resistance ofthe springs.

In the several press-plates an arrangement is provided whereby theveneers are first pressed on in the center gradually but irmly. Thisdevice consists of a vmetal plate l, on which a plate-spring m isarranged, Fig. 3, which latter has space for movement or play in arecess in the center of the pressing-plate f. The plates Z may also,after a suitable compression of the springs m, rest in such a way in thepressing-'plates f as to form one plane therewith. These plates receiveguidance on the one hand by means of a central guide-bar n, traveling ina socket 0, and on the other hand by means of guide-rods p, arranged oneon each side of the same.

When veneers are to be pressed on by means of this improved press, thespindles are first only drawn up so far that the central pressure-platesof the separate stamps rest on the veneer and press it in the middle-lby means of the spring-pressure. Then the spindles are gradually morefirmly applied in order that the veneer mayhave time to extendeverywherein such a Way that it lies smooth. Thespindles are only thenfirmly pressed on by means of suitable turning means, such as leversinserted in transverse holes in the spindles.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is- In veneer-presses such as described, the arrangement ofcentral vertically-guided plates Z resting against springs min theseparate press-platesf, in such a Way that these springmounted plates Zproject from the press-plates f, but with increase of pressureupon themthey gradually bear upon and lie ush with the press-plates,substantially as hereinbefore described, and shown in the accompanyingdrawings.

In Witness whereof I have hereunto signed my name, this 18th day of.October, 1900, in E

